Finding the Fourth Proportional to 74,288.64, 111,430.08 and 18,886.08
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Solution
The fourth proportional to 74,288.64, 111,430.08 and 18,886.08 is: 28,328.39
Step by Step Solution
- Step 1: Write the proportion equation
74,288.64 : 111,430.08 = 18,886.08 : x - Step 2: Convert to fraction form
74,288.64/111,430.08 = 18,886.08/x - Step 3: Cross multiply
74,288.64x = 111,430.08 × 18,886.08 - Step 4: Simplify right side
74,288.64x = 2,104,477,405.29 - Step 5: Solve for x
x = 2,104,477,405.29/74,288.64 - Step 6: Final answer
x = 28,328.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.